Designed in strict accordance with NB/SH/T 0087-2021 (replacing SH/T 0087-1991), this tester determines the cavitation corrosion characteristics of engine coolants on automotive aluminum pumps. It is suitable for engine coolant and concentrate, using General Motors test pumps that meet ASTM standards.
The instrument simulates cavitation corrosion of aluminum water pumps under high-temperature conditions. By circulating the sample through a standard aluminum automotive water pump for 100 hours under specified conditions, it evaluates the coolant's protective performance. The pump is then inspected and rated according to a grading table. This tester helps prevent equipment damage caused by coolant corrosion, providing reliable quality assurance for manufacturers and end users.
| Feature | Benefit |
|---|---|
| Imported frequency converter | Pump speed precisely controlled at 4600±100 r/min for consistent, repeatable results |
| Liquid flow regulator | Ensures circulation meets standard test conditions |
| All stainless steel circulation pipe and expansion tank | Excellent corrosion resistance, no interference with test results, long service life |
| Automatic pressure control | Maintains 103±3 kPa without manual adjustment, reducing errors |
| Digital timer with alarm | Accurate 0–100h timing, alerts when test completes |
| PID controller with PT100 sensor | Temperature accuracy ±1°C, uniform heating via stainless steel rod heater |
| Fan-cooled storage tank | Prevents overheating, enhances test reliability |
| Bottom drain nozzle | Easy coolant replacement and system cleaning |
| Parameter | Value |
|---|---|
| Power supply | AC380±10% 50Hz |
| Temperature range | Room temp. ~150°C |
| Temperature accuracy | ±1°C |
| System pressure | 100–106 kPa |
| Pump inlet vacuum | 6.8 kPa (abs. 94.5 kPa) |
| Cumulative time | 0–100 h |
| Heating power | 2.6 kW |
| Motor power | 3 kW |
| Total power | 6 kW |
*Test pump: standard aluminum Buick pump, speed controlled by imported frequency converter at 4600±100 r/min.*
NB/SH/T 0087-2021 (current effective version)
SH/T 0087-1991 (historical)
ASTM D2809-2021 (published December 10, 2021)
General Motors test pump standard
Coolant manufacturing (outgoing inspection, batch control, formulation)
Automotive & parts (material selection for engines, pumps, cooling systems)
Third-party testing (quality inspection, arbitration, certification)
Research institutes & universities (corrosion mechanism studies, new material trials)
Inspection & quarantine (import/export compliance)
Aviation, industrial equipment, heavy-duty engines
“Quality creates the future” is our guiding principle. We pursue high technology, quality, and service. Our complete quality assurance system covers pre-sales, sales, after-sales, technical consultation, and training.
